Virulence Factors and Antifungal Susceptibility Patterns in Vulvovaginal Candidiasis Isolates

Authors

Keywords:

vaginal candidiasis, Candida albicans, enzymatic activity, antifungal susceptibility.

Abstract

Introduction: Vulvovaginal candidiasis is a common reason for medical consultation, and the number of patients experiencing recurrent symptoms is increasing. Although Candida albicans is its main etiological agent, recent studies have shown a rise in the incidence of other species. Virulence traits contributing to the clinical presentation include dimorphism, adherence, biofilm formation, and secretion of lytic enzymes

Objectives: To determine the production of virulence factors (phospholipases, proteases) and the in vitro antifungal susceptibility to nystatin and fluconazole of Candida spp. isolates from cases of vulvovaginal candidiasis.

Methods: Sixty isolates belonging to the genus Candida, from patients with vulvovaginal candidiasis, were studied. The production of phospholipases and proteases was evaluated using specific media for their detection, and the Pz indices referring to the production ability of each isolate were quantified. The antifungal susceptibility study followed the guidelines established in document M27-A3 from the CLSI.

Results: Out of the 60 isolates, 33 showed phospholipase activity (55%) and 34 were protease producers, accounting for 56.67%. Significant differences were found in phospholipase production between C. albicans and non-albicans Candida, but not in protease production. Only one C. albicans isolate was resistant to nystatin. For fluconazole, resistance was observed in ten C. albicans isolates, one C. glabrata, and one C. famata. These isolates reached a minimum inhibitory concentration of ≥ 64 µg/mL for this antifungal.

Conclusions: These results provide a more comprehensive understanding of the etiology of vulvovaginal candidiasis, which is of great epidemiological and therapeutic value.

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Author Biography

Mayda Rosa Perurena Lancha, Instituto de Medicina Tropical ¨Pedro Kourí (IPK), La Habana

Laboratorio de Micología del Departamento Bacteriología-Micología del IPK

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Published

2024-08-16

How to Cite

1.
Perurena Lancha MR, Caballero Rivero B, Velar Martínez RE, San Juan Galán J, Martínez Machín G, Fernández Andreu CM, et al. Virulence Factors and Antifungal Susceptibility Patterns in Vulvovaginal Candidiasis Isolates. Rev Cuba Med Tropical [Internet]. 2024 Aug. 16 [cited 2025 Feb. 21];76. Available from: https://revmedtropical.sld.cu/index.php/medtropical/article/view/979

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